Drier driving means



May 22, 1928'.

J. W. VEDDER DRIER DRIVINGMEANS Filed Jan 15, 1928 2 Sheets-Sheet 1 fw/M May 22, 1928. 1,670,832 J. w. VEDDER DRIER DRIVING MEANS Filed Jan.-13, 1928 2 Sheeis-Sheet 2 w w a kg i i W 1 flllll NI 0 l o 0 v I R J Q FI a N x R3 R N1 a A N Q u n a" "II II k 1 I I Q & 3 Q Fr l N 17266720; IN r g Jaw/572022113 071 to provide a gear the attendants to get at v lPatented May 22, 1928.

UNITED STATES PATENT oFFicE.

JOHN WARREN VEDDER,

TON & FALES, INCORPORATED, 015' MASSACHUSETTS.

. DRIER DRIVING MEANS.

or WORCESTER, mAssAonUsE'rrs, AssIeNoB TO 31cm. 2A3- or wonons'rna,MASSACHUSETTS,

A confounds This invention relates to an arrangement of gearing 1 paperma mg for driving a drier part of a machine.

The principal objects of the invention are drive which will enable theparts on the driving side for lubrication, also forspearing the paper,will distribute the shafting; and gearing with of gears to beinspection, repairs, etc., an strain on the gears an casing for the toprovide a in parts the cover made up and permit a. section removedwithout dismantling a large part of the machine.

Other objec vent-ion will a Reference is to ing drawings,

Fig.

ts and advantages of the inppear hereinafter.

be had to the accompanyin. which 1 is a side View of a drier partconstructed in accordance with this invention showin only a portionthereof near the from the drivset of cylinders;

.::Fig 2 i a view of one of the sections of gears ing one moved takenout;

on the same scale as Fig. 1, showof the plates of the gear casing retoillustrate how the gears can Fig. 3 is a sectional view on the line 33'of Fig. 1;

Fig. 4 is a sectional view on the line 4-4 of Fig. 1;

Fig. 5 is a sections of the casing for Fig. 6 is a showing how plan of ajoint between two the gearing, and side view atthe same point the casingis cut out to permit the gears to be removed.

I have shown the invention as applied to a drier part adapted to receivethe we of paper and low comprising a series of steam heated cylinders 10located in two sets above and below. It has been customary heretofore toplace these cylinders in such relathat a gear canbe mounted on the endof each and said gears 'mesh of the web.

other in accordance with By this I mean that each the first cylindershaft at the left in Fig. 1

will have a gear upon it meshing with a gear on the cylinder shaft belowand to the right of it, and the latter will have a gear meshing with thegear on the next cylinder above and to the rig ht of it, and so onthroughout the series. In this way, although the gear ratios were keptcorrect and a. comparatively small number of gears was required, the

back-lash wastransmitted all the way across the machine directly fromone cylinder to the next, thus causin trouble in some cases, and thestrain on t e gearin was unbal anced as the power was applie to a gearin the bottom section at a point near thebottom and transmitted fromthat gear at-another point near the top.

In the ordinary construction the gears, which are on the rear ends ofthe drier journals or trunnions which carry the drying cylinders, are oflarger size than the cylinders themselves in order to make the webtravel at desired uniform eed. These are located on the rear side an itis practically impossible to get in behind them to oil the bearingsfltoperform any slight repairs,

keep the parts clean, or to spear the paper. One of the objects of thisinvention is to provide a form of gearing for driving the located I haveprovided gears 16 meshing) with the gears l t. The gears'14 and 16 thusalternate with each other and they are all of the same size on the formshown. They transmit power to the cylinders in the same direction asheretofore, but the transmission of the power to the cylinders alongtoward the end of the machine at the bottom may be said to beindependent of the transmission of the power to the correspondingcylinders at the top. This makes more gearing, but none of the gearshave to be so large and it will be seen that each gear receives power onone side of its shaft and transmits power from a diametrically oppositepoint around the circumference. The small gears do not prevent accesstothe bearings for lubrication and repairs.

Having described the gearing I will now describe the frame of themachine. There drier cylinders which will be of sucha nashafts V is ofcourse the usual frame 20 of the drier which supports the cylinders inthe usual way. On the floor of the room, or on a suitable solid support,is carried a casing 21 for the gearing. Above-the casing 21 is a casing23 for the upper gears, and this is connected with the frame by bearings22 which surround each one of the shafts l2 and extend inwardly to theframe 20.

This latter casing is supported fronmthe frame by posts 24 arranged atintervals. The casings 21 and 23. are provided with front platesorcovers 25 which are of different sizes. as will appear, but they are allrectangular in shape, and certain of them are constructed so as toencompass the length of three gears 14; and 16. The line of divisionbetween two of these cover plates 25 has to come at the pitch line ofthe intermeshing gears. Therefore, the teeth of the gears project halfway beyond this line in each case, and-when the cover is removed two ofthe end gears could not be lifted out conveniently to say the least.

For this purpose the covers 25 are cut away to provide notches 26. Thesenotches register with eachother. and form a rec:-

tan ular opening which is covered by a plate "27 olted to the edges ofthese notches as appears in Fig. 6 especially. Now when one of thecovers 25 is removed and the two plates 2'2' adjacent thereto, which canbe taken ofi' with it, a set of three gears 1s always exposed in such away that all three of them can be taken out very readily as 18 clearlyindicated in Fig. 2. g

It may be stated that the shaft 11 shown in Fig. 1, is the power shaftto which power is delivered from a'motor or line of shafting, and thistransmits power directly through the lowarset of gears 14: and 16. It

7 isalso provided with a pulley 28 or sprocket wheel driving a belt orchain 29 which, through a similar pulley or wheel 30, drives the shaft12, which in this case. happens to be one of the shafts on which one ofthe cylinders 10 is mounted. This shaft 12 becomes the driving shaft forthe upper series of gears and cylinders and transmits itspower 'to themdirectly without any special infiuence from the train of gearing in thelower set. in this way the strain on the g gears is equalized, the lossof surface travel .due to back-lash is also equalized .in the upper andlower sets and the gears are easily removed. These advantages can besecured without changing the spacing apart of the cylinders. r

The elements 28, 29 and 30 are housed in a casing carridd' bythe casings21 and 23 and made up of several'parts 31, 33 and 34.

There are two of the latter and they con- 1. In a paper drying machine,the comhination with a series of drying cylinders over which the web isadapted to pass, a shaft midwa --between each two adjacent cylindershafts, a series of gears on said shafts,. meshing with each other in atrain along the machine, and a gear casing covering the said gears and aplurality of covers divided along lines tangent to the pitch lines ofthe gears, said covers being notched at said pitch lines to permit theremovalof the gears by straight movement along their shafts, and acoverplate covering the two notches of two ad'acent covers.

2. In a paper rying machine, the combination with a series of steamheated drying cylinders over which the web is adapted to pass, saidcylinders being arranged on that-modifications may be i shafts inhorizontal alignment, a shaft midon said shafts meshing with each otherin alignment along the machine, and a gear casing covering the saidgears and having a plurality of removable covers, said covers beingdivided along lines tangent to the pitch lines of the gears, and certainof said coversbeing notched at said pitch lines to permit the removal ofthe gears, two adjacent covers supporting a cover plate covering thenotches.

3. In a paper drier, the. combination with a train of gears arrangedhorizontally for operating the drier, with a casing extending along the.train of gears and supported at the bottom, a second train of gearsdirectly above the first train, a casing for the second set ;o f gearssurrounding them, and posts supported by the first casing and bearingthe weight of the second casing.

In testimony whereof I have hereunto affixed my signature.

JOHN WARREN VEDDER.

